Relationship between thermal behaviour of lignocellulosic components and properties of biomass

Fast pyrolysis of eucalyptus waste in a conical spouted bed reactor

“…hemicellulose, cellulose and lignin, which take place in the 150-500°C range, with the maximum weight loss rate being at 310, 330 and 340°C, for the heating rates of 5, 10 and 15°C min À1 , respectively. It has been reported that hemicellulose degradation corresponds to the first shoulder preceding the highest peak, which is attributed to cellulose pyrolysis, whereas lignin decomposition takes place throughout the whole pyrolysis process and gives way to a long tail at high temperatures (Pang et al, 2014). Furthermore, the presence of extractives such as fatty acids, hydrocarbons, phytosterols, carbohydrates, phenol derivates, etc., results in the small shoulders that overlap hemicellulose and lignin decomposition at 200, 225, 380 and 480°C (Meszaros et al, 2007).…”

Cellulose, xylan and lignin interactions during pyrolysis of lignocellulosic biomass

“…Some researchers have predicted lignocellulosic biomass pyrolysis profiles based on the lignocellulosic composition with some degree of accuracy in thermogravimetric analyser (TGA), concluding that no detectable interactions between the three components took place during pyrolysis [8][9][10]. By contrast, some other reports claimed that the pyrolysis behaviour of lignocellulosic biomass cannot be explained by the simple superposition of three components due to their significant interactions [11][12][13][14][15], different for example from the additive behaviour found in coal macerals [16].…”

Comprehensive utilization of glycerol from sugarcane bagasse pretreatment to fermentation

“…Lignin devitalised over a wider range of temperatures overlapping the other two components Table 2 Components and elements analysis of sugarcane bagasse before and after glycerol pretreatment. (Pang et al, 2014). The thermal decomposition of reactive hemicellulose resulted in the formation of the first DTG peak, while the second DTG peak with the maximum weight loss rate (DTG max ) was induced by cellulose decomposition.…”